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Walter 4 inch knot twisted wire cup brush carbon steel

Walter Surface Technologies

Walter Surface Technologies pneumatic accessory

SKU CH-4ARH-FDC5W

A knot-twisted wire cup brush for angle grinders that removes heavy rust, scale, spatter and corrosion from steel surfaces

  • Product typeSanders & Grinders Accessories
  • Fast surface preparation with angle-grinder compatibility
  • Efficient heavy-duty deburring and contaminant removal
  • Longer brush life through detachable supporting ring
  • Secure mounting via threaded arbor design
  • Durable oil-hardened carbon steel wire construction

13G404 Knot Twisted Wire Cup Brush

The Walter 13G404 Knot Twisted Wire Cup Brush is a finishing accessory built for angle grinders. It targets metalworkers who need rapid surface preparation on steel. The brush removes heavy rust, scale, spatter and corrosion. It also handles deburring tasks in industrial and automotive workshops.

Sustained material removal

Oil-hardened carbon steel wire maintains cutting aggression during extended heavy-duty sessions. The knot-twisted design resists wire fatigue when stripping thick contamination layers. A detachable supporting ring controls flaring as the brush wears. This feature preserves consistent contact pressure over long production runs.

Threaded arbor mounting

Threaded arbors allow direct installation onto compatible angle grinders without extra adapters. The removable supporting ring extends service life by exposing fresh wire as the tips wear down. Oil-hardened carbon steel construction withstands the impact of high-speed grinding. The design prioritises operator safety during aggressive surface conditioning.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $31.99
Typical for this category: the median of 5,493 items is $27.99.

Specifications

Product
Brand nameWalter Surface Technologies
Product typeSanders & Grinders Accessories

Questions about this item

How much vibration or heat does the 4 in carbon-steel cup brush generate during extended grinding sessions?

The oil-hardened carbon steel wire and detachable supporting ring limit flaring, reducing vibration and heat buildup during heavy-duty deburring or rust removal.

What angle-grinder spindle thread does the 13G404 brush require for installation?

The brush uses a threaded arbor that matches standard angle-grinder spindles, allowing direct mounting without additional adapters.

Will the 13G404 cup brush fit the guards and side handles on my older angle grinder?

Its 4 in diameter and standard threaded arbor are compatible with most angle-grinder guards and side-handle configurations.

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